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    使用锂 - 钒复合氧化物的锂二次电池的负极电极材料及其制造方法

    公开(公告)号:KR1020130010808A

    公开(公告)日:2013-01-29

    申请号:KR1020110071690

    申请日:2011-07-19

    Abstract: PURPOSE: A negative electrode material for lithium secondary batteries is provided to have extremely high charging voltage when used in the negative electrode by having extremely low discharging voltage, thereby providing energy density of a battery. CONSTITUTION: A negative electrode material for lithium secondary batteries is represented by chemical formula: Li_aV_bO_c and is a lithium-vanadium complex oxide that lithium ions can be inserted into/separated from the lithium-vanadium complex oxide. In chemical formula, a/b≥3.0 and c= Ua+5b ^/2. A manufacturing method of the negative electrode material comprises: a step of manufacturing a uniform mixture by mixing a lithium supply source which contains oxygen atoms, and a vanadium supply source which contains oxygen atoms; and a step of heat-treating the lithium-vanadium complex oxide by heat-treating the uniform mixture under an oxidation atmosphere.

    Abstract translation: 目的:提供一种用于锂二次电池的负极材料,其通过具有极低的放电电压而在用于负极时具有极高的充电电压,从而提供电池的能量密度。 构成:用于锂二次电池的负极材料由化学式Li_aV_bO_c表示,并且是锂离子可以从锂 - 钒复合氧化物中插入/分离的锂 - 钒复合氧化物。 在化学式中,a /b≥3.0和c = Ua + 5b ^ / 2。 负极材料的制造方法包括:通过混合含有氧原子的锂供给源和含有氧原子的钒供给源来制造均匀混合物的步骤; 以及在氧化气氛下对均匀混合物进行热处理来对锂钒复合氧化物进行热处理的工序。

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